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Cold, dry climatic changes related to the disappearance of the Neanderthal



NEW YORK (AP) ̵

1; Ancient periods of cold and dry climates have helped our species replace Neanderthals in Europe, as a study suggests.

Researchers found such cold periods. English:. (19459043) The disappearance of our evolutionary cousins ​​in different parts of the continent, followed by the appearance of our planet Species Homo sapiens

"Whether it moves or is extinct, we can not say," said Michael Staubwasser of the University of Cologne in Germany

Neanderthals once lived in Europe and Asia, but died about 40,000 years ago, just a few thousand years after our species Homo sapiens arrived in Europe. Scientists have long been debating what happened, and some have blamed climate change. Other suggested explanations include epidemics and the idea that the newcomers ousted the Neanderthals from resources.

Staubwasser and colleagues reported on their findings on Monday in the Proceedings of the National Academy of Sciences. They resorted to existing climatic, archaeological and ecological data and added new indicators of the ancient climate from studies of two caves in Romania.

Her study showed two cold and dry periods. It started about 44,000 years ago and lasted about 1,000 years. The other began about 40,800 years ago and lasted six centuries. The timing of these events corresponds to the periods when Neanderthal artifacts disappear and signs of H. sapiens appear in places in the Danube valley and in France.

Climate change would have replaced the forest with bush grassland. and H. sapiens may have been better adapted to this new environment than the Neanderthals, so they could move in after the disappearance of the Neanderthals.

Katerina Harvati, a Neanderthal expert at the University of Tübingen in Germany, who was not included in the study, found it helpful to have the new climate data from Southeastern Europe, a region that H. sapiens probably spread across the continent.

But she said it was unclear whether Neanderthals had disappeared and H. Sapiens appeared at the times stated by the authors, because the studies they cite rely on limited evidence and are sometimes contentious

Chris Stringer of the Natural History Museum in Lo Ndon said he believes the newspaper provided good evidence of the effects of climate change on Neanderthals, although he believes other factors also play a role in their disappearance.

Rick Potts of the Smithsonian Institution called the study "a refreshing new look" As I said, our species did not trick the Neanderthals, "Potts said in an email." We just survived. The new paper offers a lot to think about how it happened. "

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Follow Malcolm Ritter at @MalcolmRitter His most recent work can be found at http://tinyurl.com/RitterAP[19659004] ___

The Associated Press Health & Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education, with the AP responsible for all content.


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